A Low Sidelobe Double-Layer Corporate-Feed Array Antenna by Inverted Microstrip Gap Waveguide at 28 GHz
Paper in proceedings, 2019

In this work, a novel low sidelobe array antenna is designed at 28 GHz. The proposed array antenna is fed by classic full-corporate double-layer distribution networks based on newly introduced inverted microstrip gap waveguide. In order to achieve low sidelobe property, a classic Taylor synthesis method is adopted in this work. In the distribution network, a couple of unequal power dividers with identical output phases are applied for the low sibelobe in this work. The fundamental radiator is 2×2 slot sub-array, and the entire array antenna is constructed by 8×8 of such kind sub-arrays. The simulated radiation patterns show that the first sidelobe levels, front-back ratio of both E-plane and H-plane from 26.5 GHz to 29.5 GHz are very well improved compared with traditional ones with the equal amplitude and phase distribution networks. The input impedance bandwidth is about 12% with the reflection coefficient below -10 dB, and the gain is more than 29 dBi from 26.5 GHz to 29.5 GHz.

array antenna

Taylor synthesis

low sidelobes and unequal power dividers with identical output phases

Inverted microstrip gap waveguide

Author

Jinlin Liu

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Ashraf Uz Zaman

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Jian Yang

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

2019 International Symposium on Antennas and Propagation, ISAP 2019 - Proceedings

8963361

2019 International Symposium on Antennas and Propagation, ISAP 2019
Xian, China,

Subject Categories

Telecommunications

Other Physics Topics

Other Electrical Engineering, Electronic Engineering, Information Engineering

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2/27/2020